| // Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| package com.android.tools.r8.ir.optimize; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.core.IsNot.not; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.ForceInline; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.cf.code.CfTryCatch; |
| import com.android.tools.r8.graph.CfCode; |
| import com.android.tools.r8.graph.Code; |
| import com.android.tools.r8.graph.DexCode; |
| import com.android.tools.r8.graph.DexCode.TryHandler; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class SubsumedCatchHandlerTest extends TestBase { |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| int exitCode = 0; |
| try { |
| exitCode = foo(); |
| } catch (RuntimeException e) { |
| // This catch handler will be subsumed by the catch handler in foo() after inlining. |
| handleCaughtRuntimeException(); |
| } |
| System.out.print(" -> " + exitCode); |
| } |
| |
| @ForceInline |
| private static int foo() { |
| try { |
| bar(); |
| } catch (Exception e) { |
| // No statements with side-effects here; otherwise this block will be guarded by the |
| // RuntimeException catch handler from main(). |
| return 1; |
| } |
| return 0; |
| } |
| |
| @NeverInline |
| private static void bar() { |
| System.out.print("In bar()"); |
| } |
| |
| @NeverInline |
| private static void handleCaughtRuntimeException() { |
| System.out.print("In handleCaughtRuntimeException()"); |
| } |
| } |
| |
| @Parameters(name = "Backend: {0}") |
| public static Backend[] data() { |
| return ToolHelper.getBackends(); |
| } |
| |
| private final Backend backend; |
| |
| public SubsumedCatchHandlerTest(Backend backend) { |
| this.backend = backend; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| String expected = "In bar() -> 0"; |
| |
| testForJvm().addTestClasspath().run(TestClass.class).assertSuccessWithOutput(expected); |
| |
| CodeInspector inspector = |
| testForR8(backend) |
| .addInnerClasses(SubsumedCatchHandlerTest.class) |
| .addKeepMainRule(TestClass.class) |
| .enableInliningAnnotations() |
| .run(TestClass.class) |
| .assertSuccessWithOutput(expected) |
| .inspector(); |
| |
| ClassSubject classSubject = inspector.clazz(TestClass.class); |
| assertThat(classSubject, isPresent()); |
| assertThat(classSubject.method("void", "handleCaughtRuntimeException"), not(isPresent())); |
| |
| MethodSubject mainMethodSubject = classSubject.mainMethod(); |
| Code code = mainMethodSubject.getMethod().getCode(); |
| if (code.isDexCode()) { |
| DexCode dexCode = code.asDexCode(); |
| assertEquals(1, dexCode.handlers.length); |
| |
| TryHandler handler = dexCode.handlers[0]; |
| assertEquals(1, handler.pairs.length); |
| |
| DexType guard = handler.pairs[0].getType(); |
| assertEquals("java.lang.Exception", guard.toSourceString()); |
| } else { |
| assert code.isCfCode(); |
| CfCode cfCode = code.asCfCode(); |
| assertEquals(1, cfCode.getTryCatchRanges().size()); |
| |
| CfTryCatch handler = cfCode.getTryCatchRanges().get(0); |
| assertEquals(1, handler.guards.size()); |
| |
| DexType guard = handler.guards.get(0); |
| assertEquals("java.lang.Exception", guard.toSourceString()); |
| } |
| } |
| } |